Pneumatic ball valve manufacturers tell you the important basis for selecting ball valves
1. It is a hydraulic control system, which is very common in the application of liquid pipeline system software, and it is particularly useful. It has a very good practical effect on controlling total flow, working pressure and flow back. Because the quality of the electric ball valve is harmful to the safety coefficient of the pipeline, the selection of the electric ball valve must be carried out according to certain methods and steps.
2. Establish the specifications of your company’s pipes, and understand what specifications and interface methods must be selected for electric ball valves.
3. According to the necessity of the pipeline, some commonly used main parameters of the pneumatic ball valve, such as the discharge working capacity, allowable fluid density, and the diameter of the valve seat hole, should be determined first. If these main parameters are not selected correctly, the actual effect of the total flow control of the electric ball valve will be greatly affected.
4. According to the operating temperature of the pipeline, select suitable materials. Naturally, the pressure of the pipeline should also be considered.
Fixed ball valve of advantages
1. Emergency sealing grease injection rescue: due to the accidental invalidation of the valve seat seal caused by the dirt in the material or the fire accident, the grease injection valve is connected with the grease injection gun, which saves time and effort to introduce the sealing grease to the sealing position of the valve seat to reduce leakage.
2. Reliable stem seal and low actual operating torque: in addition to setting the standard seal throwing ring, the filler screw cap is also set with an “O” seal ring, and the two-way seal ensures the stability of the stem seal; The addition of high-purity graphite filler and the introduction of sealing grease reduce the leakage of the valve rod after a fire accident to a very low level. The rolling bearing and thrust bearing of the valve stem make the actual operation of the gate valve light.
3. Full bore or reduced diameter: full bore or reduced diameter construction can be adopted as required. The total flow diameter of full-diameter gate valve is consistent with the nominal diameter of the pipeline, which is conducive to pipeline cleaning.
4. The valve stem can be extended: the valve stem of the gate valve can be extended according to the necessity of installation or actual operation. The extended rod valve is especially suitable for urban liquefied gas and other places where pipelines must be buried and paved. The specification of the extended valve stem shall be specified by the customer.
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